Conditions For Running DTC P1870
WARNING: This page is about a different car, the 2002 GMC Cab & Chassis Sierra and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
DTC will run under the following conditions:
- No MAF sensor DTCs P0101, P0102 or P0103.
- No MAP sensor DTCs P0106, P0107 or P0108.
- No TP sensor DTCs P0121, P0122, P0123, P1120, P1220 or P1221.
- No OSS DTCs P0502 or P0503.
- The system voltage is 8-18 volts.
- No ISS DTCs P0716 or P0717.
- No TCC PWM solenoid valve DTCs P0741, P0742 or P1860.
- No 1-2 shift solenoid valve DTCs P0751 or P0753.
- No 2-3 shift solenoid valve DTCs P0756 or P0758.
- No TFP manual valve position switch DTC P1810.
- The engine speed is greater than 300 RPM for 7 seconds, and not in fuel cut-off mode.
- The throttle angle is 10-100 percent.
- Engine speed is 1250-5000 RPM.
- The transmission fluid temperature is 68-266°F (20-130°C).
- Vehicle speed is 35-110 MPH.
- TFP manual valve position switch indicates "D4".
- Speed ratio is 2.25-0.70.
- The engine torque must be between 80 ft. lbs. (108 N.m) and 650 ft. lbs. (881 N.m).
- The TCC is commanded on for 0.04 second or more.
- TCC is locked on for greater than 0.1 second.